US500281A - Phonograph - Google Patents

Phonograph Download PDF

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Publication number
US500281A
US500281A US500281DA US500281A US 500281 A US500281 A US 500281A US 500281D A US500281D A US 500281DA US 500281 A US500281 A US 500281A
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Prior art keywords
diaphragm
phonograph
reproducer
recorder
blank
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank

Definitions

  • My invention relates to the manner of constructing and mounting the sound receiving or the reproducing diaphragm or vibrating body and the recorder or reproducer in phonographs, and the object is to construct an apparatuswhich shall operate satisfactorily notwithstanding irregularities or eccentricities which are sometimes found in phonogram blanks owing to imperfections in their manufacture, or to warping after manufacture.
  • Figure 1 shows a central section of a recorder embodying the improvement.
  • Fig. 2 is a plan of the vibrating diaphragm or body.
  • 1 is the phonograph shaft, 2 the'phonograph cylinder, and 3 the phonogram blank.
  • the diaphragm or vibrating body is raised or lowered bodily as will be evident, but when the recorder or reproducer is subjected to the very rapid vibrations due to sound waves, or to the sound record, the vibrating body will not move up or down as a whole owing to the inertia of the body, but will vibrate as an ordinary diaphragm.
  • the form of the vibrating body may he changed without departing from my invention-for example the vertical rim 5 around the edge of the body is not essential, although it is found that the weight of the rim around the edge is advantageous.

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  • Diaphragms And Bellows (AREA)

Description

(No Model.)
T. A. EDISON. PHONOGRAPH.
No. 500,281. Patented June 27, 1893.
qhbwema aumwto v JKFOM u: norms vmns co. mo'mumo., WASHINGTON s c UNITED STATES PATENT OFFICE.
I THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY.
PHONOGRAPH.
SPEOIITIGATION forming part of Letters Patent No. 500,281, dated June 27, 1893.
Application filed November 21, 1890. Serial No. 372,226. (No model.)
To all whom it may concern.-
Be it known that I, THOMAS A. EDISON, a cltizen of the United States, residing at Llewellyn Park, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Phonographs, (Case No. 885,) of which the following is a specification.
My invention relates to the manner of constructing and mounting the sound receiving or the reproducing diaphragm or vibrating body and the recorder or reproducer in phonographs, and the object is to construct an apparatuswhich shall operate satisfactorily notwithstanding irregularities or eccentricities which are sometimes found in phonogram blanks owing to imperfections in their manufacture, or to warping after manufacture.
In the accompanying drawings which illustrate the invention, Figure 1 shows a central section of a recorder embodying the improvement. Fig. 2 is a plan of the vibrating diaphragm or body.
1 is the phonograph shaft, 2 the'phonograph cylinder, and 3 the phonogram blank.
4. is a mouth piece, below which is a cup shaped body 5, the bottom of which constitutes the phonograph diaphragm. This body is unconfined at its edges so that it has a bodily movement up or down without changing the tension of the portion which constitutes the diaphragm and is supported on .or by the operating point.
6 is a post to which is pivoted or movably connected, a recorder or reproducer 7, the free point of which rests on the phonogram blank.
8 is a rod, block or similar device, which connects the recorder or reproducer with the vibrating body.
In using the apparatus above described when irregularites of the blank come under the point of the recorder or reproducer the diaphragm or vibrating body is raised or lowered bodily as will be evident, but when the recorder or reproducer is subjected to the very rapid vibrations due to sound waves, or to the sound record, the vibrating body will not move up or down as a whole owing to the inertia of the body, but will vibrate as an ordinary diaphragm.
It will be evident that the form of the vibrating body may he changed without departing from my invention-for example the vertical rim 5 around the edge of the body is not essential, although it is found that the weight of the rim around the edge is advantageous.
Having thus described my invention, what I claim is 1. The combination, in a phonograph having a phonogram blank or recording surface, of a recorder or reproducer in operative relation to said blank, and a diaphragm or vibrating body unsupported at its edge, and a connection between said recorder or reproducer and diaphragm, substantially as described.
2. The combination, in a phonograph having a phonogram blank or recording surface, of a recorder or reproducer in operative relation to said blank, adiaphragm having an unconfined rim around its periphery, and a con nection between said recorder or reproducer and diaphragm, substantially as described.
3. The combination of a phonograph diaphragm unconfined at its periphery and arecorder or reproducer connected to the diaphragm, substantially as described.
4. The combination, in a phonograph, of a diaphragm unconfined at its periphery, a phonogram blank, a pivoted recorder or reproducer in operative relation to said blank and connected to the diaphragm at or near its center, substantially as described.
5. The combination of a phonograph recorder or reproducer and a diaphragm supported thereby, substantially as described.
6. The combination of a phonograph recorder or reproducer and a diaphragm supported thereby and having a weight at its periphery, substantially as described.
This specification signed and witnessed this 17th day of November, 1890.
THOS. A. EDISON.
Witnesses:
HARRY F. MILLER, THOMAS MAGUIRE.
US500281D Phonograph Expired - Lifetime US500281A (en)

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